It is something of importance, that is predicted to happen or not, whether properly said in a historical, social, political, personal sense, that its colloquial effect, uncommon, rare and exceptional being something that does not happen often, that being so transcendental and shocking at a given moment it changes the course in an individual and society; which in turn changes history and a way of thinking and future decisions about something, someone and circumstances.
In history it is said that when there was a remarkable precedent that in a unique way, it happened to be registered and preserved to be remembered how it happened, why and how it was done, either in a written or photographic way due to the importance of show future generations the passage of history, when talking about a historical event it is said that it is something that breaks a pattern in a before and after marked as an unforeseen with an impressive result, an example is the fall of the Berlin wall in the year 1989. Any event that changes the course of something has consequences that can improve or worsen the background of the place and the people who survive it.
An event is maintained over time, since the record of the occurred period provides the same data, such as date, place, event and consequences, which at present is seen to have happened and how it evolves after that, maintaining the truth of the factsof the moment, becoming in turn a statistic at future probabilities, this helps to keep it public in the collective memory for future reference due to the way it affects its environment in one way or another; that in a natural and daily way an event or event marked the lives of individuals such as the birth of a baby, marriage, winning the lottery, a reunion of some people, such as the death of others, for which unexpected events are so important as historical giving results that change the course of their lives.
